Mitsui Matsushima Co., Ltd.. The Group's principal activities are to manufacture building materials and mining coal. The operations of the Group involve domestic coals, imported coals and heavy fuels. The construction operations involve civil engineering and building construction works. Building material supply include concrete, cement and crushed stones. The Group's operations also involve warehousing, marine transportation, superstores, real estate and industrial machinery. Construction machinery and materials accounted for 46% of fiscal 2002 revenues; Fuels, 39%; Supermarkets, 9% and Real estate, 6%.